88690291 has 2 divisors, whose sum is σ = 88690292. Its totient is φ = 88690290.

The previous prime is 88690249. The next prime is 88690297. The reversal of 88690291 is 19209688.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88690291 - 2¹⁵ = 88657523 is a prime.

It is not a weakly prime, because it can be changed into another prime (88690297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44345145 + 44345146.

It is an arithmetic number, because the mean of its divisors is an integer number (44345146).

Almost surely, 2^88690291 is an apocalyptic number.

88690291 is a deficient number, since it is larger than the sum of its proper divisors (1).

88690291 is an equidigital number, since it uses as much as digits as its factorization.

88690291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 88690291 is about 9417.5522828387. The cubic root of 88690291 is about 445.9560156239.

The spelling of 88690291 in words is "eighty-eight million, six hundred ninety thousand, two hundred ninety-one".